GJTHV-801 Wireless Bluetooth 4.0 Stereo Headset Universal Vibration Neck Bluetooth Style Earphone Headphone for iPhone,Samsung,Android Cellphones Enabled Bluetooth Device (BLUE) Comfortable & Noise Cancellation, unique wearing style, memory alloy flexible neckband. Easy to handle ear set with magnetic properties. Using the world's famous brand CSR Bluetooth v4.0 Stereo chips Extended battery life. Support Bluetooth A2DP and Call. Music play time: Up to 5 hours. Talk Time: Up to 7 hours. Standby Time: up to 240 hours. Charging time: &lt;2 hours. Compatible with most cellphones and devices with bluetooth enabled, auto-reconnect. Can connected with two different Bluetooth Cellphones at the same time. High quality soud with HD speaker and enhanced BASS effect. CD quality sound with apt-X codex support.Vibrating call alert.You also can know what's the Battery Indicator of the Bluetooth Headphones in iPhone 6/6+/4S/4/5S/5/5C.